Vapor-heating system.



F. L. SHELL. vA'Pon amma SYSTEM. APPLICATION FILED UAR. 1. "I3- 1 ,1 86,446 Patented June 6, 1916.

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F. L. SHELL. I

VAPOR HEATING SYSTEM.

APPLICATION FIVLED mm. 1. 1913.

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L; sHELL, OF OMAHA, NEBRASKA.

VAPOR-HEATING Specification of Letters, Patent.

Patented June 6, 1916.

Application filed March 1, 1 913. I Serial No. 751,522.

To aZZwZwm it may concern:

Be itlinownthat l, FRANK L.,SHELL, a citizen "of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have'invented new and useful Improvements in Vapor-Heating Systems,

system and any 'air contained therein will "be removed fromfthe system in orderto peromit the vapor. or steamto'pass through the 7 system for the' fpurpos'e of heating.

The invention embodies more partie- 7 ularly, a" system ofttimes called a vacuum heating system and whereby a partial vacuum'is formed'in the system in order that 20, I v

and properly perform" its function of heating.

the vapor or steam can, readily 'pass'therein further, objectof the invention is the provision "of a vapor heating system in which useis made of means having connection ,withthe chimney of'the boiler and which,"wh en heated, will aid in the creation of a partial vacuum in'the system.

In the further disclosure of the invention reference is ,to'ibe had to the accompanying vdra-wing'gs, constituting a part of this specification, inwhichfsimilar characters of reference denote, corresponding parts in all the views, andlin which:

Figure l is a; diagrammatic front elevation of the system ;"-Fig.f2 is a fragmentary enlarged side elevation, showing the manner of arranging and supporting the controlling valves between the chimney and the boiler; Fig. 8 is a vertical longitudinal sectional view taken'through the valves; and Fig. 4 is a fragmentary plan view showingthe position of the valves with respect'to-ithe chimney and boiler and the arrangement of the exhaust pipe in the chimney;

Referring to the views, and more particularly to Fig. 1 I disclose 'a vapor heating system '10 consisting of a vapor or steam line 11 having connection, by means of suitable pipes 12, with the upper ends of radiators 13, a return line 14 being also provided and following substantially the same path as the vapor or steam line 11, the said return line having connection, by means of pipes 15, with the lower opposite ends of the radiators 13, as shown, the vapor or steam "arranged to jandl22. e The valve casing 21 includes a suitable line 11 having connection with a boiler 16 by a pipe 11 and provided'with a flue 17 connecting with a chimney 18.

"A drain pipe 19 forming a part of the re turn line and of which the pipes 15 also constit'ute'a part has connection with the boiler 16 below the water line in the boiler and the return line 14 terminates inthe drain pipe 19, as shown. An exhaust pipe 20 is arranged to extend vertically in the chimney 18, and interposed between the drain 19 and exhaust pipe 20 and connected thereto are a plurality of connected valve casings 21, 22, the valve casing 21' being supported on the drain pipe 19 and the'valve casing22 having connection with the lower end oftheexhaust pipe 20, a pipe 23 being connect the valve casings 21 cover 24 provided with a guideway 25 and in which is mounted to slide the upper end of a stem 26 forming apart of a valve 27 including a valve member 27 normally reposing on'aseat 28 formed at the upper end ofthe drain pipe 19 and adjacent the point where the drain'pipe connects with the valve casing 21, a suitable float 29 being also carr'ied on the valve stem 26 as shown in Fig.

3, and constituting a part of the valve 27 The valve casing 22 includes a cover 30 having an integral depending socket 31 in which is threaded a stem 32 forming a part of a thermostatic valve 33 andwhich includes a thermostatic diaphragm 34 and a valve member 35 depending from and rigid with the diaphragm'34c, with the said valve member adapted to repose on a seat 36 formed in the casing 22 adjacent the point of connection of'the pipe 23 with the casing, Now

it will be readily apparent that by providing thethreaded connection between the stem 32 andsocket 31 of the cover 30, the thermostatic valve 33 can'be readily adjusted with 'respectto the cover of the casing and the valve seat 36.

Now in the operation of the system disclosed it will be apparent that when the fire is started in the boiler 16, the steam or vapor produced will pass through the vapor line 11 of the system and then pass into the radiators 13. The pipes 15 connecting the radiators with the return line 14 are provided with the usual globe valves 37 and if these are open the usual products of condensation in the radiators and in the vapor line will be pipe forced into the return line 14 and then pass radiators will pass into the return line 14,

but instead of passing into, the boiler on account of the water seal at the point of connection of the drain pipe with the boiler, the air will pass upwardly into the valve casing 21 and on account of its pressure will move the valve member 27" into open position so that the air will pass through the pipe 23' into the valve casing 22 whichis normally in open position on account of the contractile action of the diaphragm 34 when not heated, and the said air will then pass into the exhaust pipe 20 extending upwardly in the chimney 18. Now it will be readily apparent that on account of the fire in the boiler the exhaust pipe 20 in the chimney 18 will be heated on account of the waste products ofcombustion passing up the chimney from the boiler. This heating of the 20 will cause the air therein to become heated and pass upwardly in the pipe, thus creating a partial vacuum in the valve casings 21 and 22 and the return line 1 1 so that the heating of the pipe in the chimney will aid in exhausting the air from the system.

When the return has been exhausted from the system, as mentioned, it follows that the vapor which has now filled the radiators 13, will pass into the return line 1 1 on account of the pressure it has, and will in consequence pass into the casings 21 and 22, but when the vapor reaches the casing 22 the heat of the vapor willcause the diaphragm 34k to become heated and it will immediately expand, thus moving the valve member 35 i into closed position to close the outlet of the pipe 23 and prevent any further vapor from passing into the casing 22. It will now be apparent that the operation of the system will be complete and that the heat of the vapor will of course heat the radiators and in this way heat the atmosphere of the rooms in the building in which the radiators are located. It will be readily seen that any products of condensation contained in the casing 21 or pipe 23 will tend to return to the drain pipe 19 and in order to prevent .copiel of thin prevented in view patent may be obtained for five cents each, by addressing the Commissioner 0! Washington, D. 0;"

any clogging in the casing '21 and pipe 23, I provide the float 29 carried by the valvp 27 so that the products of condensation, m, turning to the drain pipe 19, will, thr y the medium of the float 29, raise the va v0 member 27 from its seat 28 and permit the products of condensation to pass into th drain pipe.

From the foregoing description it therefore, be seen that with the vapor heat ing system described the usual water-ham mer found in a great many systems will be of the fact that the it contained in the system as well as the prod nets of condensation therein are exhau from the system as the vapor or steam-ad vanceS therein and the products of conden sation will follow a direct path back to the boiler while the air in the system will pa outwardly through the exhaust pipe 20 the chimney 18, the provision of-the valve! 27 and 33 being adapted, however, to p'e all products of condensation in the casi 21 and 22 and pipe 23 to return to the-fire pipe and thence to the boiler and also prevent the steam or vapor for heating from passing into the exhaust pipe 20 m the chimney 18. a a 1 Having thus described my invention," claim: a

In a heater, in combination, a boiler, radiator, a steam pipe connecting said. boileaa and radiator, an exhaust pipe connected said radiator and having a curvedoffsetf its lower end, a pipe section leading fr said offset to below the water line of anti boiler, a casing communicating with s a pipe section above said offset, a valve in en casing closing said pipe section but adap to be unseated by the fluid pressure there a float in said casing for unseating saf valve, a second casing, a pipe joining bof casings, a thermostatically controlled val in the second casing closing the last-named pipe, and a heated exhaust pipe commmt eating with the second casing.

In testimony whereof I afiix my signatu; in presence of two witnesses.

. FRANK L. SHELL.

Witnesses W. P. Hoxm, L. E. THOMPSON. 

